/************************************
	Proprocess
*************************************/
* Envirnoment Setup;
%initEnv(homelevel=2,opts=%str(cpucount=actual|threads));
libname allcity "./Data";
libname temp "./temp";

* Copy data;
data analysisForPrev(compress=yes);
	set allcity.analysis2;
run;

proc means data=work.analysisforprev mean std median;
	var stdse;
run;

proc quantreg data=analysisForPrev;
	model stdse=semster/ quantile=(0.1 to 0.9 by 0.1);
run;